Ship-davit.



J. F.' WADDINGTON.

SHIP DAVIT.

APPLI'CATION FILED JAN. 12. 1913.

Patented Mar. 11, 1919.

v 4 z H 3 mm a m O "0 c a: u 4 O M f m i JamesFrank/in WaaU/ngfan,

-UNITED STATES PATENT OFFICE.

In W WADDING'ION, OF BEVERLY, NEW JERSEY.

sm-nsvrr.

1,297,276. specification or mm Patented Mar-'11, 1919. Application filedJanuary 12, 1918. Serial llo. 211,594.

To allanlolu't may concern: reference denote corresponding parts in allBe it known that I, Janus Fmmxnm Wmarmr, a subject of the King ofEngland, at Perkins Lane, Beverly, 1n

Etheeounty B andStateofNew Jimmy, have invm new and useful Improvementsin Ship-Davits, of which the folowing is a specification.

The invmtum' relates tglboats and1 more Elam lad to raising" an oweevices shi? ind has for an object tib rovide davits r conveniently suporting li e boats orotherlife-avingparap on or adjacent to the deck orside of the ship, where the be 011:; off the way vliilen nog m use,capob 0 being rea y an efiectively moved'into position for use fordamsmg' orlowermg' life-savm' g boatsor other vices. Among otherfeatures, the invention comprehends the provision of davits which willnotonlysupportthelifeboat or the like in an out-of-the-way position whenthe same is not in use and permit of swinging the life boat intoposition where it can be conveniently and quickly lowered, but theoperation of moving the life boat from its normal totheplace orspotwhereit isto be owered de of the ship is one that can be quickly andeffectively accomplished, with a minimum amount of work and labor,amiwiththeasurancethattherewillbe no hitch in the operation, so that inan emergency, or otherwise, the desired operation can be accomplishedwithout mishap. I am aware that various forms of ship dlvits have beenmed heretofore and are in use at the present time, and with these inmind I have produced ship davits which will accomplish the result forwhich they are intended much more efiectively and with less labor.Furthennore, I aim to provide ship devils which can be more cheaplyconstructed and more readily assembled and placed in position for use,than some other forum of known shi davits.

In the further d sclosure of theinventionrefermeeistobehadtotheaccompanying drawing, constituting a partof this specification, in which similar characters of the views, and inwhich- Figure 1 is a fragmentary end view show- 1ng a hfe boat supportedby my .form. of V dav 1ts, on the deck of a shi the full lines 55lndicatmg the normal position of the boat and davits, and the dottedlines the position of the boat and davits when the same are swungoutward beyond the side of the vessel.

Fig. 2 1s a fragmentary side elevation with parts in section, showingthe arrangement of the davits and the bracing therefor, the operatmdgmechamsm of this view being remove Fig. 3 is a substantially horizontalsectional view, slightly enlarged, taken on the line 33 of Fig. 1, and IFig. 4 is a longitudinal sectional view taken on the line 44 of Fig. 1,the view being slightly enlarged.

Referrm more particularly to the views, the numera 10 indicates the deckof a vessel 11 and the numeral 12 a side of the vessel, while thenumeral 13 indicates one of the uprights or main elements of the 76davits, it being understood that a plurality of these uprights is ofcourse employed, although a single-operating mechanism is preferablyused. For this reason I will describe merely one of the uprights and the80 single-operating mechanism used in conjunction therewith.

Secured to the deck 10 is a base 14 which may be of channel or otherconvenient form of construction, with the upright 13 mounted to swingupon an end of the base, the upright bei sli htly inclined, as shown inFig. 2. A $11 ht y inclined rod or shaft 15 forms part 0 the pivotalconnection of the upright 13 with the base, and an end of said rod isjournaled in a supplemental base or anchor plate 16, a. suitable braceor tie rod 17 being also connected to the anchor plate 16, andprojecting upwardly at an angle toward the upright 13 to be rigidlyconnected to the upper end thereof, the upper end of the tie rod beingformed to provide a suitable hook 18 which projects and depends to oneside of the inner face of the upright, and to which is suitablyconnected the usual block 19 employed in raising or lowering ships, saidblock having ropes 20 passing thereover, and which also pass over ablock 21 suitably connected to the life boat 22, it heing understood bymanipulating the ropes 20, the lite boat 22 can be raised or lowered asdesired.

l ivoted on the other end of the base 14: 1s a link 23 which in detailis shown in Fig. 4:, and which may consist of a channel section or otherconvenient form of construction, the upper end or said link 23 havinghinged connection with a tubular crosshead 2a, internally threaded tooperate over a screw 25 which is pivoted on the base 14 and extendsupwardly at an angle and at one end thereof has an operating ,wheel 26.The linlr 23, together with the screw 25, its operating wheel 26 and thecrosshead 24, form a part of the operating mechanism, and the latter iscompleted by the provision of a second link 27 having pivotal connectionwith the crosshead, and which extends upwardly and forwardly for hingedconnection with a plate 28 rigidly secured to the upright 13.

As mentioned heretofore, t inclined toward the space which is occupiedby the life boat, and so also the brace or tie rod 17, this form ofdesign being desired so as to provide absolutely swinging clearance forthe lif boat between the uprights and the davits, and referring to Fig.2 it will be seen that normally the upright 13 is inclinedinwardlytoward the center of the ship or vessel on which the davits arearranged, the crosshead 2d at this time being in its uppermost positionor the screw and abutting against the operating wheel 26. With thisarrangement it will be seen that the life boat 22 lies wholly within thevertical plane or the side 12 of the vessel, and the his boat thereforeis supported above the deck or the vessel, and does not project over theside where it might be an obstruction to the proper navigation or thevessel.

When it is desired to lower the life boat or swing the life boat intoposition where it will be conveniently ready to lower to the sea, it isonly necessary to manipulate the operatin wheel 26, causing the screw 25to turn an thus advance the crosshead along the screw toward its lowerend, This will cause the two links 23 and 2? to act and the result willbe the swinging ofthe upright 13 from its normal position, shown in fulllines of Fig. 1, to an outward position, shown in dotted lines of thesame figure, so that the life boat will assume a position adjacent toand free from the side of the vessel, this position being clearly shownin Fig. 1.

It will also be clear that in raising the life boat from the sea and thedeclr or the ship, the reverse of the operation heretofore described,takes place, and the reversal of e upright 13 is the operation of thescrew will swing the uprights of the davits back into normal position,thus bringing the boat over the deck of the vessel.

It of course be understood that I do not limit myself to the particularform of device shown and described; that various slight changes may bemade without departing from the spirit or the invention; that the devicemay also be used for other desirable purposes than for use with lifeboats or life rafts, and the scope or the invention is dedeed in theappended claims.

I claim:

1. in a device or the character described, the combination with a base,of uprights mounted to swing on the base and normally inclined toward aninward position, said uprights being adapted to support aboattherebetween, tie rods for said uprights to swing therewith to hold saiduprights inclined toward said boat, a revoluble screw, an operatingwheel therefor, an element in threaded engagement with the screw'to beadvanced or retreated thereon, and links, having pivotal connection withsaid element, one of said links connecting with one of the uprights andthe other link with the base, whereby when said screw is operated, saidupright will be swung from its normal inwardly inclined position to anoutwardly inclined position, or vice versa.

2. in a device of the character described, the combination with a base,of uprights mounted to swing on the base and normally inclined toward aninward position, said uprights being adapted to support a boattherebetween, a revoluble screw, an operating wheel therefor, an elementin threaded engagement with the screw to be advanced or retreatedthereon, and links, having pivotal connection with said element, one ofsaid links connectin with one of the uprights and the other link withthe base, whereby when said screw is operated, said upright will beswung from its normal inwardly inclined position to an outwardlyinclined posltion, or vice versa.

3. in a device of the character described, the combination with a base,of sup orting uprights mounted to swing on the hase to support anobject, such as a boat, said uprights being normally in an inclinedinward position and at all times inclined toward the object, to permitof the object swinging freely therebetween, a revoluble screw, means foroperating said screw, an element in threaded engagement with the screwto be advanced or retreated thereon, and links, havin pivotal connectionwith said element, one or said links having pivotal connection with thehase, and the other link having pivotal connection with one or theuprights, wherehy operation of the screw will swing f a boat-supportingswingin mally supporting the boat a ove the deck of said uprights fromtheir normal inwardly inclined position, into an outwardly inclinedposition and carry said boat therewith.

4. In a ships davits, the combination with upright northe ship, withsaid upright normally inclined inwardly toward the ship, and inclinedtoward the boat to permit of the boat always swinging clear of theupright, a. tie rod 10 mounted to swing with the upright and hold thesaid upright inclined toward the said boat, and means for swinging theupright outwardly into an inclined position to carry the boat adjacentto and clear of the side of 15 the ship, or vice versa.

In testimony whereof I affix my signature.

JAMES FRANKLIN WADDINGION.

